Associated Press

Jordan Spieth watches his drive on the 11th hole of the North Course at Torrey Pines during the second round of the Farmers Insurance Open.

Jordan Spieth turned out to be the star attraction Friday playing with Tiger Woods at Torrey Pines in San Diego.

Spieth again showed game well beyond his 20 years with a 9-under 63 on the North Course, giving him a one-shot lead over Stewart Cink going into the weekend at the Farmers Insurance Open. Cink drilled a 3-wood from 280 yards onto the green at the par-5 ninth on the tougher South Course for a two-putt birdie and a 71.

Woods hardly looked the part of the defending champion. He did not make birdie on any of the par 5s for the second straight day, and a three-putt bogey on the par-5 ninth hole on the North gave him a 71. He was nine shots behind.

Phil Mickelson's ailing back wasn't much better, though Lefty plodded along and shot 73 on the South to finish eight shots out of the lead. Mickelson contemplated pulling out to rest his back, and said only that he would give it a shot Saturday depending on how he felt.

Spieth was at 10-under 134 and will be in the last group Saturday with Cink and Nicolas Colsaerts, who shot 67 on the South and was two shots behind. The final two rounds will be on the South, which is about 600 yards longer.

LPGA: Jessica Korda took the second-round lead in the season-opening Bahamas LPGA Classic in Paradise Island, Bahamas, birdieing four of her last seven holes in high wind for a 7-under 66.

The 20-year-old Korda had an 11-under 135 on Atlantis Resort's Ocean Club course. She won the 2012 Women's Australian Open for her lone LPGA Tour title.

Paula Creamer, playing alongside Korda, was a stroke back after a 65.

Michelle Wie and Monday qualifier Jenny Suh were tied for third at 9 under. Wie had a 65, and Suh shot 66.

Lydia Ko, the 16-year-old New Zealander who shared the first-round lead with Meena Lee, was three strokes behind at 8 under after a 70.